core: add infinite_bound helper

Author: jcarpent

include/proxsuite/helpers/common.hpp

@@ -0,0 +1,30 @@
+//
+// Copyright (c) 2022 INRIA
+//
+/**
+ * @file common.hpp
+ */
+
+#ifndef PROXSUITE_HELPERS_COMMON_HPP
+#define PROXSUITE_HELPERS_COMMON_HPP
+
+#include "proxsuite/config.hpp"
+#include <limits>
+
+namespace proxsuite {
+namespace helpers {
+
+template<typename Scalar>
+struct infinite_bound
+{
+  static Scalar value()
+  {
+    using namespace std;
+    return sqrt(std::numeric_limits<Scalar>::max());
+  }
+};
+
+} // helpers
+} // proxsuite
+
+#endif // ifndef PROXSUITE_HELPERS_COMMON_HPP